The Exception in the thread "thread - 9" is Java. Lang. SecurityException: Could not lock the User prefs. Lock the file access denied.
The at Java. Util. Prefs. FileSystemPreferences. CheckLockFile0ErrorCode (FileSystemPreferences. Java: 930)
The at Java. Util. Prefs. FileSystemPreferences. LockFile (FileSystemPreferences. Java: 919)
The at Java. Util. Prefs. FileSystemPreferences. Sync (FileSystemPreferences. Java: 725)
The at Java. Util. Prefs. FileSystemPreferences. Flush (FileSystemPreferences. Java: 818)
The at Java. Util. Prefs. FileSystemPreferences. SyncWorld (FileSystemPreferences. Java: 462)
The at Java. Util. Prefs. FileSystemPreferences. Access the $1200 (FileSystemPreferences. Java: 44)
The at Java. Util. Prefs. FileSystemPreferences $5 $1. Run (FileSystemPreferences. Java: 440)
Which bosses know?